/* ==========================================================================
   Footer
   ========================================================================== */

/* ── Outer wrapper ────────────────────────────────────────────────────── */
.ac-footer {
	background:  var(--ac-color-blue-dark); /* #006BA8 — gives 5.7:1 contrast with white, vs 4.2:1 for #0081C9 */
	color:       rgba(255, 255, 255, 0.90);
	font-size:   var(--ac-font-size-sm);
	position:    relative;
}

/* ── Main body ────────────────────────────────────────────────────────── */
.ac-footer__main {
	padding-block: var(--ac-space-16) var(--ac-space-12);
}

/* 4-column grid */
.ac-footer__grid {
	display:               grid;
	grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
	gap:                   var(--ac-space-10);
	align-items:           start;
}

/* ── Col 1 — Brand ───────────────────────────────────────────────────── */
.ac-footer__brand {
	display:        flex;
	flex-direction: column;
	gap:            var(--ac-space-5);
}

.ac-footer__logo-link {
	display:    inline-block;
	max-width:  160px;
	transition: opacity var(--ac-duration-short) var(--ac-ease-standard);
}

.ac-footer__logo-link:hover,
.ac-footer__logo-link:focus-visible {
	opacity: 0.85;
	outline: 2px solid rgba(255, 255, 255, 0.6);
	outline-offset: 4px;
	border-radius: 2px;
}

.ac-footer__logo {
	display:    block;
	width:      100%;
	height:     auto;
	max-height: 60px;
	object-fit: contain;
}

/* Fallback plain-text site name */
.ac-footer__site-name {
	font-size:       var(--ac-font-size-xl);
	font-weight:     var(--ac-font-weight-bold);
	color:           var(--ac-color-white);
	text-decoration: none;
}

.ac-footer__tagline {
	margin:      0;
	font-size:   var(--ac-font-size-sm);
	line-height: var(--ac-line-height-normal);
	color:       rgba(255, 255, 255, 0.90);
	max-width:   26ch;
}

/* Social icons */
.ac-footer__social {
	list-style: none;
	margin:     0;
	padding:    0;
	display:    flex;
	flex-wrap:  wrap;
	gap:        var(--ac-space-3);
}

.ac-footer__social-link {
	display:         flex;
	align-items:     center;
	justify-content: center;
	width:           40px;
	height:          40px;
	border-radius:   var(--ac-radius-pill);
	border:          1px solid rgba(255, 255, 255, 0.30);
	color:           rgba(255, 255, 255, 0.80);
	text-decoration: none;
	font-size:       0.9rem;
	transition:
		background    var(--ac-duration-short) var(--ac-ease-standard),
		border-color  var(--ac-duration-short) var(--ac-ease-standard),
		color         var(--ac-duration-short) var(--ac-ease-standard),
		transform     var(--ac-duration-short) var(--ac-ease-standard);
}

.ac-footer__social-link:hover,
.ac-footer__social-link:focus-visible {
	background:   var(--ac-color-secondary);
	border-color: var(--ac-color-secondary);
	color:        var(--ac-color-white);
	transform:    translateY(-2px);
	outline:      none;
}

.ac-footer__social-link:focus-visible {
	outline:        2px solid var(--ac-color-white);
	outline-offset: 2px;
}

/* ── Col 2 & 3 — Nav menus ───────────────────────────────────────────── */
.ac-footer__nav-title {
	font-size:      var(--ac-font-size-base);
	font-weight:    var(--ac-font-weight-bold);
	color:          var(--ac-color-white);
	margin:         0 0 var(--ac-space-5);
	letter-spacing: 0.02em;
	text-transform: uppercase;
}

.ac-footer__nav-list {
	list-style: none;
	margin:     0;
	padding:    0;
	display:    flex;
	flex-direction: column;
	gap:        var(--ac-space-3);
}

.ac-footer__nav-list li a {
	color:           rgba(255, 255, 255, 0.90);
	text-decoration: none;
	font-size:       var(--ac-font-size-sm);
	line-height:     var(--ac-line-height-normal);
	display:         inline-flex;
	align-items:     center;
	gap:             var(--ac-space-2);
	transition:
		color      var(--ac-duration-short) var(--ac-ease-standard),
		gap        var(--ac-duration-short) var(--ac-ease-standard);
}

.ac-footer__nav-list li a::before {
	content:    '—';
	font-size:  0.65rem;
	opacity:    0;
	color:      var(--ac-color-secondary);
	transition: opacity var(--ac-duration-short) var(--ac-ease-standard);
	flex-shrink: 0;
}

.ac-footer__nav-list li a:hover,
.ac-footer__nav-list li a:focus-visible {
	color: var(--ac-color-white);
	gap:   var(--ac-space-3);
}

.ac-footer__nav-list li a:hover::before,
.ac-footer__nav-list li a:focus-visible::before {
	opacity: 1;
}

.ac-footer__nav-list li a:focus-visible {
	outline:        2px solid rgba(255, 255, 255, 0.7);
	outline-offset: 2px;
	border-radius:  2px;
}

/* ── Col 4 — CTA block ───────────────────────────────────────────────── */
.ac-footer__cta {
	display:        flex;
	flex-direction: column;
	align-items:    flex-start;
	gap:            var(--ac-space-6);
}

.ac-footer__cta-text {
	font-size:   var(--ac-font-size-xl);
	font-weight: var(--ac-font-weight-bold);
	color:       var(--ac-color-white);
	line-height: var(--ac-line-height-tight);
	margin:      0;
}

/* ── Bottom bar ──────────────────────────────────────────────────────── */
.ac-footer__bottom {
	border-top: 1px solid rgba(255, 255, 255, 0.12);
	padding-block: var(--ac-space-5);
}

.ac-footer__copyright {
	margin:      0;
	text-align:  center;
	font-size:   var(--ac-font-size-xs);
	color:       rgba(255, 255, 255, 0.90);
	letter-spacing: 0.02em;
}

.ac-footer__copyright a {
	color:           rgba(255, 255, 255, 0.90);
	text-decoration: none;
}

.ac-footer__copyright a:hover {
	color:           var(--ac-color-white);
	text-decoration: underline;
}

/* ── Back to top ─────────────────────────────────────────────────────── */
.ac-back-to-top {
	position:        fixed;
	bottom:          var(--ac-space-6);
	right:           var(--ac-space-6);
	z-index:         var(--z-above);
	width:           44px;
	height:          44px;
	border-radius:   var(--ac-radius-pill);
	background:      var(--ac-color-primary);
	color:           var(--ac-color-white);
	border:          2px solid rgba(255, 255, 255, 0.25);
	cursor:          pointer;
	display:         flex;
	align-items:     center;
	justify-content: center;
	font-size:       0.875rem;
	box-shadow:      var(--ac-shadow-md);
	transition:
		background   var(--ac-duration-short) var(--ac-ease-standard),
		transform    var(--ac-duration-short) var(--ac-ease-standard),
		opacity      var(--ac-duration-short) var(--ac-ease-standard);
}

.ac-back-to-top[hidden] {
	display: none;
}

.ac-back-to-top:hover,
.ac-back-to-top:focus-visible {
	background: var(--ac-color-secondary);
	transform:  translateY(-2px);
	outline:    none;
}

.ac-back-to-top:focus-visible {
	outline:        3px solid var(--ac-color-primary);
	outline-offset: 3px;
}

/* ── Reduced motion ─────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
	.ac-footer__social-link,
	.ac-footer__nav-list li a,
	.ac-back-to-top {
		transition: none;
	}
}

/* ── Tablet (≤ 72em) — 2+2 grid ─────────────────────────────────────── */
@media (max-width: 72em) {
	.ac-footer__grid {
		grid-template-columns: 1fr 1fr;
		gap:                   var(--ac-space-10) var(--ac-space-8);
	}

	/* Brand spans full width on its own row */
	.ac-footer__brand {
		grid-column: 1 / -1;
		flex-direction: row;
		flex-wrap:      wrap;
		align-items:    flex-start;
		gap:            var(--ac-space-8);
	}

	.ac-footer__tagline {
		max-width: 36ch;
	}
}

/* ── Mobile (≤ 40em) — single column ────────────────────────────────── */
@media (max-width: 40em) {
	.ac-footer__main {
		padding-block: var(--ac-space-10) var(--ac-space-8);
	}

	.ac-footer__grid {
		grid-template-columns: 1fr;
		gap:                   var(--ac-space-8);
	}

	.ac-footer__brand {
		flex-direction: column;
	}

	.ac-footer__cta-text {
		font-size: var(--ac-font-size-lg);
	}

	.ac-back-to-top {
		bottom: var(--ac-space-4);
		right:  var(--ac-space-4);
	}
}